com.itextpdf.layout.element.Text Maven / Gradle / Ivy
/*
This file is part of the iText (R) project.
Copyright (c) 1998-2023 Apryse Group NV
Authors: Apryse Software.
This program is offered under a commercial and under the AGPL license.
For commercial licensing, contact us at https://itextpdf.com/sales. For AGPL licensing, see below.
AGPL licensing:
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see implements ILeafElement, IAccessibleElement {
protected String text;
protected DefaultAccessibilityProperties tagProperties;
/**
* Constructs a Text with its role initialized.
* @param text the contents, as a {@link String}
*/
public Text(String text) {
if (null == text) {
throw new IllegalArgumentException();
}
this.text = text;
}
/**
* Gets the contents of the Text object that will be rendered.
*
* @return the string with the contents
*/
public String getText() {
return text;
}
/**
* Sets the contents of the Text object.
* @param text the new contents
*/
public void setText(String text) {
this.text = text;
}
/**
* Gets the text rise.
* @return the vertical distance from the text's default base line, as a float.
*/
public float getTextRise() {
return (float)this.getProperty(Property.TEXT_RISE);
}
/**
* Sets the text rise.
* @param textRise a vertical distance from the text's default base line.
* @return this Text
*/
public Text setTextRise(float textRise) {
setProperty(Property.TEXT_RISE, textRise);
return (Text) (Object) this;
}
/**
* Gets the horizontal scaling property, which determines how wide the text
* should be stretched.
* @return the horizontal spacing, as a float
*/
public Float getHorizontalScaling() {
return this.getProperty(Property.HORIZONTAL_SCALING);
}
/**
* Skews the text to simulate italic and other effects. Try alpha=0
* and beta=12.
*
* @param alpha the first angle in degrees
* @param beta the second angle in degrees
* @return this Text
*/
public Text setSkew(float alpha, float beta){
alpha = (float) Math.tan(alpha * Math.PI / 180);
beta = (float) Math.tan(beta * Math.PI / 180);
setProperty(Property.SKEW, new float[]{alpha, beta});
return this;
}
/**
* The horizontal scaling parameter adjusts the width of glyphs by stretching or
* compressing them in the horizontal direction.
* @param horizontalScaling the scaling parameter. 1 means no scaling will be applied,
* 0.5 means the text will be scaled by half.
* 2 means the text will be twice as wide as normal one.
* @return this Text
*/
public Text setHorizontalScaling(float horizontalScaling) {
setProperty(Property.HORIZONTAL_SCALING, horizontalScaling);
return (Text) (Object) this;
}
@Override
public AccessibilityProperties getAccessibilityProperties() {
if (tagProperties == null) {
tagProperties = new DefaultAccessibilityProperties(StandardRoles.SPAN);
}
return tagProperties;
}
/**
* Give this element a neutral role. See also {@link AccessibilityProperties#setRole(String)}.
*
* @return this Element
*/
public Text setNeutralRole() {
this.getAccessibilityProperties().setRole(null);
return this;
}
@Override
protected IRenderer makeNewRenderer() {
return new TextRenderer(this, text);
}
}